Mystery solenoid
02 May 2009, 04:54 PM
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Mystery solenoid
Does anyone know what the solenoid between the inlet manifold and MAP sensor does? It seems to vent to atmosphere but I can’t understand when it or why it would need to do this 
Subaru call it the: "Pressure sources switching solenoid value" in their ECU pinout.
Thanks
Subaru call it the: "Pressure sources switching solenoid value" in their ECU pinout.
Thanks
02 May 2009, 05:19 PM
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Don't worry, I eventually found the answer on NASIOC 
It allows the ECU to flick between sensing atmospheric pressure and manifold pressure.
It allows the ECU to flick between sensing atmospheric pressure and manifold pressure.
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